What absorbs at 783 cm⁻¹ in an FTIR spectrum?

クイックアンサー

A band near 783 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.

可能性のある官能基アサイン

ランキングは蓄積された文献証拠を反映しており、単一の権威あるルールではありません。常にサンプルのコンテキストと照合して確認してください。

可能性のある材料

同じ文献プールがこのバンドと少なくとも1つの追加の特性ピークをサポートする場合にのみ、材料が表示されます。

スペクトルロジック

This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 783 cm⁻¹ is usually not enough for material identification by itself.

実使用例

この種のクエリは、ポリマー識別、未知のプラスチックスクリーニング、QCトラブルシューティング、リサイクル材料の検証、および文献に基づいたピーク帰属のレビューで一般的です。

よくある間違い

• 少なくとも1～2つの支持ピークを確認せずに、1つの孤立したバンドを材料の証拠として扱うこと。
• 重複を無視: 複数の官能基が同じ波数付近に寄与することがあります。
• 添加剤、ブレンド、酸化、または汚染がスペクトルを歪める可能性がある場合に検証を省略すること。

検証アドバイス

曖昧さが残る場合は、特にブレンド、劣化サンプル、充填ポリマーについて、DSC、GC-MS、またはTGAで仮説を検証してください。

これらのアサインの根拠となる文献

• Amide 信頼度 1.0

  “the FTIR spectra of as prepared PPy showed the important characteristic cm-1, peaks at 783 which corresponds C-N vibration.”

  Highly Biological Active Antibiofilm, Anticancer and Osteoblast Adhesion Efficacy from MWCNT/PPy/Pd nanocomposite DOI: 10.1016/j.apsusc.2017.10.142
• 信頼度 1.0

  “Furthermore, and 783 cm-1, which have been assigned to Ti-O-Ti vibrations [34,35].”

  Enhancing Free Cyanide Photocatalytic Oxidation by rGO/TiO2 P25 Composites DOI: 10.3390/ma15155284
• N h 信頼度 1.0

  “The FTIR of LX (pure drug) shown intense bands at 3060 cm-1, 1647 cm-1, 1590 cm-1, cm-1, cm-1 1590 1323 and 783 corresponding to the functional groups NH, C=O, cm-1, 1323 cm-1, and 783 cm-1 corresponding to the functional groups NH, C=O, CO”

  Almotairi 等 - 2022 - Design and Optimization of Lornoxicam Dispersible DOI: 10.3390/ph15121463
• Alkene (C=C) 信頼度 1.0

  “Peak at 783.4 indicates treatment with US and O3 C-- To estimate cumulative biogas production, many studies have the presence of alkene compounds and C bending.”

  Enhancement of biogas production from individually or co-digested green algae Cheatomorpha linum using ultrasound and ozonation treated biochar DOI: 10.1016/j.ultsonch.2022.106197
• Hydroxyl (O-H) 信頼度 1.0

  “cm-1 cm-1 cm-1 3296 (OH vibration), 2947 (asymmetrical CH stretching vibration), 2875 shifted slightly to 1110, 993 and 783 cm-1, respectively.”

  Morphology and Selected Properties of Modified Potato Thermoplastic Starch DOI: 10.3390/polym15071762
• Nucleic acid 信頼度 1.0

  “In particular, a decrease in Raman bands related to nucleic acids (1484, 783 cm-1) in the log phase compared to lag phase was observed [25].”

  Kochan 等 - 2020 - Vibrational Spectroscopy as a Sensitive Probe for DOI: 10.3390/s20123452
• 信頼度 1.0

  “The bands at ~3550, (C=O 3406 (OH stretching vibration), and additionally 1113 and 668 cm-1 (S-O stretching and bending, respectively) indicated the presence of gypsum, whereas the bands at 1640, 1325 stretching cm-1 respectively) indicated”

  Investigating the Potential of the Er:YAG Laser for the Removal of Cemented Dust from Limestone and Painted Plaster DOI: 10.3390/coatings10111099
• 信頼度 1.0

  “30 cm(cid:0) 1, Al(cid:0) OH stretching and bending of tetrahedral 1120 31 Al(cid:0) aluminum is observed, respectively, while O stretching of 32 octahedral aluminum is assigned to the bands at 783 and”

  Synthesis and Characterization of Ru‐Loaded Anodized Aluminum Oxide for Hydrogenation Catalysis DOI: 10.1002/open.201900091